Question: What are the phenomenon which start with the letter s
Paraphrase: What are the wonder which begin with the letter s
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q483247 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 's')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: subtractive color, subtractive color, Soret Peak, Soret Peak, snowball effect, snowball effect, solar prominence, solar prominence, St. Elmo's fire, St. Elmo's fire, Signor–Lipps effect, Signor–Lipps effect, self-organized criticality, self-organized criticality, snowmelt, snowmelt, Selectivity, Selectivity, side effect, side effect, superdiamagnetism, superdiamagnetism, slighting, slighting, spoiler effect, spoiler effect, stick-slip phenomenon, stick-slip phenomenon, Stød, Stød, spread effects, spread effects, Saccadic masking, Saccadic masking, Salting in, Salting in, Sylvia Plath effect, Sylvia Plath effect, smokestack syndrome, smokestack syndrome, second city syndrome, second city syndrome, Sajkan, Sajkan, shrinkflation, shrinkflation, single cause, single cause, starquake, starquake